Default CUDA Environment Variable

[im.thatoneguy]

I don't know if it's already like this or not. But it would be nice if it automatically searched the Environment variable if it's defined for the CUDA files. I'm not sure how I'm supposed to modify the dropdown menu in the UI for rendernodes.

Also it would be nice if the Env variable name was in the Readme.

[tyFlow]

Sure, I can have it try to read that ENV variable, even if tyFlow's DLL settings aren't set to ENV variable mode (ie, you're not able to configure tyFlow in workstation mode).